Synthesis and electrochemical capacitive performance of thieno[3,4-b]pyrazine-based Donor-Acceptor type copolymers used as supercapacitor electrode material
作者:Xiuping Ju、Lingqian Kong、Jinsheng Zhao、Guoyi Bai
DOI:10.1016/j.electacta.2017.04.011
日期:2017.6
PMOTP and PMTP. The obtained conjugated polymers were routinely characterized by FT-IR, SEM and TGA at first. Then, as supercapacitor electrode materials, they were further investigated in detail by cyclic voltammetry (CV), constant galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) methods The GCD results showed that the polymer-modified GCEs had high specific capacitances
以噻吩并[3,4-b]吡嗪(TPZ)为受体单元(A),以3-甲基噻吩或3-甲氧基噻吩为供体单元(D),合成了两种新型的供体-受体-供体型单体。所制备的DAD单体分别命名为MOTP和MTP。这两种单体可以通过恒电位法在玻璃碳电极(GCE)上轻松聚合,所得DAD替代共轭聚合物称为PMOTP和PMTP。首先,首先通过FT-IR,SEM和TGA对得到的共轭聚合物进行常规表征。然后,作为超级电容器电极材料,通过循环伏安法(CV)对其进行了进一步的详细研究,恒恒电流充放电(GCD)和电化学阻抗谱(EIS)方法GCD结果表明,聚合物改性的GCE在PMOTP和PMTP上的比电容分别为678.2和319.1 F / g。 1安/克。在电流密度为10 A / g的条件下进行1000次充放电循环后,两种聚合物修饰的GCE均具有出色的开关稳定性,PMOTP和PMTP的高保留率分别为77.3%和53.4%。值得注意